Other
Scientific paper
Apr 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aps..apr..c602v&link_type=abstract
American Physical Society, APS/AAPT Joint Meeting, April 18-21, 1997, abstract #C6.02
Other
Scientific paper
The instrument COMPTEL aboard NASA's Compton Gamma-Ray Observatory has led to a major progress in the field of astronomical gamma-ray line spectroscopy. In the area of nucleosynthesis lines COMPTEL has for the first time generated an all-sky map of the 1.8 MeV line from radioactive ^26Al. In addition, it succeeded in the first detection of the 1.156 MeV line from radioactive ^44Ti from a Supernova remnant (Cas A) and found hints for ^56Co gamma-ray line emission from the type Ia SN 1991T. The stringent COMPTEL upper limits to the 1.275 MeV flux from classical novae require a refinement of present nova models. The other area of gamma-ray line spectroscopy in which COMPTEL made an important observation, is that of nuclear interaction lines: COMPTEL detected excessive MeV emission from the Orion complex that may be ascribed to excitation of ^12C and ^16O nuclei, though other interpretations may be possible, as well.
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